Pplz help me

I think A

In this Commerce Clause case, the Supreme Court affirmed Congress's power to regulate interstate commerce, and held that by virtue of the Supremacy Clause, state laws “must yield” to constitutional acts of Congress

answer; i believe its (cpr);

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.